Singletons of design patterns
The singleton design pattern is simple to understand. A class that allows only one object (or instance) to be created is a singleton. This design...
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Category: The back-end
Listen to me play the piano — happy New Year ~ Happy New Year
February 1, 2024
by Michael Brown
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Smooth sailing year after year, all the best backgammon, I wish you all the best in the New Year. Please enjoy the following, the first...
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A @retryable note, very elegant, some interesting!
February 1, 2024
by Kiaan Dhawan
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I am not going to teach you how to use Spring-Retry in this article. It is very powerful and has been used extensively. I want...
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These commonly used 5 types of SpringBoot annotations, actually still do not know?
February 1, 2024
by Andrew Forsyth
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Contains @ComponentScan, @Configuration, and @EnableAutoConfiguration annotations. @ComponentScan tells Spring Boot to scan the Configuration class and add it to the application context. Component scanning, which...
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Brief introduction to the architecture design of seckill system
February 1, 2024
by Tania Kennedy
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Seckill is a common marketing method for e-commerce websites. - Brief discussion on the architecture design of seckill system
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Java Advanced Features – Annotations: What about Spring annotations?
February 1, 2024
by 李雅琪
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In Spring, you'll use annotations a lot. With these annotations, our code does a lot of magic. For example, the following class uses only two...
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How many of Bytedance’s favorite puzzles do you know?
February 1, 2024
by Divyansh Swaminathan
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In the process of the interview, the investigation of intelligence questions often appear, this article summarizes some common intelligence questions, looking for a job small...
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Click to receive the New Year’s Calendar
February 1, 2024
by Mr. Jonathan Richards
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The annual Spring Festival means the New Year is about to begin, the beginning of the New Year is certainly not a calendar, today with...
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Install OpenOffice on Linux
February 1, 2024
by Mark Banks
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This is my 16th day of the August Challenge. The August Challenge project required installing openOffice on Linux, which was supposed to be easy, but...
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2. Class loading mechanism
February 1, 2024
by Yasmin Sachar
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A Class file is a set of binary streams based on 8-bit bytes, without any separators between data items. When encountering data items with more...
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1. The description of the JVM
February 1, 2024
by Mary Prentice
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This is done by bootstrap Class Loader to create an initial class that is specified by the virtual machine's concrete implementation. When a so-called Java...
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Did the interviewer ask you to write down all the singleton patterns correctly?
February 1, 2024
by Kaitlyn Chandler-Monk
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In the interview, we are often asked this question: Please write a Singleton Pattern. All right, just write. It's not easy. Write a quick one:...
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9. String constant pool
February 1, 2024
by 範淑玲
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As long as one of them is a variable, the result is in the heap. Variable concatenation works because StringBuilder ensures that there is only...
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SLF4J meets RocketMQ
February 1, 2024
by Chad Fuller
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In normal Java project development, logging is a long way to record some key nodes in the project operation process and collect business data. SLF4J...
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Flink status management and Checkpoint Combat — Simulation of e-commerce order calculation downtime scenario, explore how to accurately continue to calculate orders when downtime recovery
February 1, 2024
by Rachel Simpson
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Take you to the heart of Flin. When Flink performs window aggregation statistics, sorting and other operations, the data stream can not be processed without...
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How many of the 18 annotations in Spring do you know?
February 1, 2024
by 李信宏
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It takes about 4 minutes to read this article. Identifies a class that is the Spring MVC Controller handler used to create objects that handle...
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[Monday Commuter Radio · Special] a six-thousandword ramble on the 2022 backend framework trends
February 1, 2024
by Beth Tyler
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It never hurts to know the most popular backend frameworks on the market. On the one hand, this will help you develop your second programming...
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GIN Practice Problem Record and Problem Resolution (I)
February 1, 2024
by 李龍
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Create a project directory. Eg: Studytest go to the project directory. CD studyTest write the test entry file. The test. go run main.go
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Spring’s 7 most commonly used categories of annotations, the most powerful collation in history!
February 1, 2024
by Melissa Jenkins
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With newer iterations of the technology, Java5.0 began to support annotations. As the leading framework in Java, Spring has gradually abandoned XML configuration and used...
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Centos7 installation python3.6.5
February 1, 2024
by 張志偉
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Pure foolproof step, guaranteed success. The following operation, according to the steps, do not go to another file directory in the middle of the CD,...
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1716. Calculate the force to withhold money from the bank: simple simulation
February 1, 2024
by Jonathan Harris-Watts
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This is 1716 in LeetCode. It is easy to calculate the amount of money deducted from the bank. Hercy wanted to save money to buy...
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You should use these new features in Python3
February 1, 2024
by Stephen Swanson
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As Python2's official maintenance period comes to an end, more Python projects are switching from Python2 to Python3. However, in the actual work, I found...
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Gateway authentication, JWT usage, and Token renewal
February 1, 2024
by Melissa Wong
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@RestControllerAdvice Catches global exceptions and then returns them to the front
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7. Runtime data area [object’s instantiated memory layout and access location, direct memory]
February 1, 2024
by Thomas Holden
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The virtual machine checks a new instruction to see if its arguments can locate a symbolic reference to a class in Metaspace's constant pool, and...
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Spring Boot (14) : Teach you four moves to achieve CORS cross-domain resource sharing
February 1, 2024
by Hrishita Koshy
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CORS stands for "Cross-domain Resource Sharing"; Before introducing CORS in detail, let's briefly introduce what the same origin policy is, so that we can understand...
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Distributed Task Scheduling Framework: XXL-job
February 1, 2024
by 崔志偉
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Xxl-job-admin /xxl-job-samples/ distributed task scheduling/study notes/source code parsing/continuous updates
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Seeing that my colleagues were still messing with thread pool parameters, I wrapped a thread pool builder utility class
February 1, 2024
by Paula Eglinton
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Background believe that many partners in the work will use thread pool, but the use of thread pool definition is a relatively complex process, because...
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Namenode double buffering and segment locking
February 1, 2024
by Nicola Ryan-Brooks
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Double buffering and segment locking. IsAutoSyncScheduled there are three flags isAutoSyncScheduled: Determine whether a cache swap is in progress. Synctxid: this is the transaction ID...
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Profile multi-environment switch and NACOS installation and use
February 1, 2024
by Joanna Edwards
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@RestControllerAdvice Catches global exceptions and then returns them to the front
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More to the point: Does Kafka lose data at all?
February 1, 2024
by Aayush Borra
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Kafka message loss scenarios and solutions are analyzed from the perspective of Kafka architecture, Producer, Broker, and Consumer.
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